Gas-purifying apparatus.



No. 810,563. PATBNTBD JAN. 23, 1906. P. PLANTINGA.

GAS PURIPYING APPARATUS.

APPLICATION FILED JUNE 28, 1905.

PIERRE PLANTINGA, OF CLEVELAND, OHIO."

GAS-PURIFYING APPARATUS.

Specification of Letters Patent.

Patented Jan. 23, 1906.

Application led June 28, 1905l Serial No. 267,349.

T all 11171/0717/ it Tim/y concern:

Be it known that I, PIERRE PLANTINGA, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, State of Ohio, have invented a new and useful Improvement in Gas Purifying Apparatus, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to that class of devices used in the purification of illuminatinggas known as tar-extractors, such as is shown in Patent No. 771,390, issued to me October 4, 1904, and in which the fiowing body of gas is divided into a multiplicity of streams and these streams interrupted by the interposition in their paths ofl bafiieplates. The contact with these baffle-plates extracts the tar from the gas. In structures heretofore used for this purpose the plates for forming the multiplicity of streamsJ and to which I shall hereinafter refer by the name dividing-plate, and the bathe-plates have been alternately arranged, so that the gas was first caused to pass through the perforations in a dividing-plate, strike the imperforate portions of the succeeding bafiie-plate, and then pass through the comparatively large openings in the latter, as is well known to those skilled in the art. As is further well known, the perforations in one dividingplate were of the same size as compared with the perforations of every other dividingplate. I have found that in the use of the above construction as complete a4 removal of the tar has not been attained as was desired and that those bafiie-plates later receiving the impact of the gas did much less work in extracting tar than did those first receiving such impact.

The object of my invention is to increase the efficiency of this class of extractors, and I have found that as compared with the extractors constructed as above described this object is attained by arranging the dividingplates in such a manner that those plates first receiving the gas will offer less resistance to its flow therethrough than will those later receiving said gas. Themeans for effecting such result applies particularly to the drum of the extractor and will be hereinafter fully described, and specifically set forth in the claims.

In the annexed drawings, Figure l represents a top plan, partly in horizontal section, of a tar-extractor drum of well-known general form and embodying my invention. Fig. 2 represents a horizontal section of a part of the drum, illustrated upon an enlarged scale.

The drum is of enlarged cylindrical form, as shown, and the gas enters its interior as described in said above-mentioned patent. The cylindrical side of the receptacle consists of a plurality of parallel plates a a2 and b b2, which are secured to each other by means of bolts c c and are held apart from each other by means of separators d d to form annular spaces e e/ c2. rIhese plates consist alternately of dividing and baffle plates, two each in the illustrated structure; but any desired number of plates may be used, as will be understood. Each dividingplate is provided with a plurality of groups of small perforations a3 a3, adapted to divide a body of gas fiowing therethrough into a plurality of small streams. Each baflieplate is provided with a plurality of comparatively large openings bs, which, however, are placed out of alinement with the groups of perforations a3 a?, as shown, so that an imperforate portion of a baffleplate is interposed in the path of said small gas-streams, which receives the impact of the latter and to which the tar adheres.

As thus far described the above-described structure is old and well known. Now in order to effect the previously-mentioned economical result the perforations of the inner dividing-plate a are made larger than the perforations of the next succeeding dividingplate a2, so that the former offers less resistance to the passage of gas therethrough than does the latter. In actual practice the perforations in plate a are made about one-sixteenth of an inch in diameter and those in plate a2 about one-twentieth of an inch in diameter, while the dimensions of the openings in the bafIfe-plates are about one-fourth inch by one inch. Such improved arrangement I have found produces a' marked economical result, each bafiie doing an equal amount of work. Y

Other modes of applyingthe principle of my invention may be employed instead of IOO the one explained, change being made as regards the means herein disclosed, provided the meansstated by any one of the following claims or the equivalent of such stated means be employed. i

I therefore particularly point out and distinctly claim as my inventionl. In a device for extracting tar from gaseous mixtures, a series of plates interposed in the path of the gas, said series consisting of alternately-arranged perforated plates constructed to divide the gas into a multiplicity of streams, and baHle-plates having openings and constructed to receive the impact of the gaseous masses constituting such streams, each dividing-plate being arranged to o'fler less resistance to the passage of gas therethrough than does the next succeeding dividing-plate.

PIERRE PLANTINGA.

Attest:

JNO. F. OBERLIN, A. E. MERKEL.

3 Signed by me this 18th day of April, 1905. 

